var http_request = false;

	function send_request(url) {
		http_request = false;

		if(window.XMLHttpRequest) { //Mozilla ???
			http_request = new XMLHttpRequest();
			if (http_request.overrideMimeType) {//??MiME??
				http_request.overrideMimeType('text/xml');
			}
		}
		else if (window.ActiveXObject) { // IE???
			try {
				http_request = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				try {
					http_request = new ActiveXObject("Microsoft.XMLHTTP");
				} catch (e) {}
			}
		}
		if (!http_request) {
			window.alert("????XMLHttpRequest????.");
			return false;
		}
		http_request.onreadystatechange = processRequest;
		
		http_request.open("GET", url, true);
		http_request.send(null);
	}
	
	function processRequest() {
        if (http_request.readyState == 4) { // ??????
            if (http_request.status == 200) { // ???????????????
                alert(http_request.responseText);
            } 
            else { 
                alert("??????????!");
            }
        }
    }